The newly created attribute is accepted if the user accepts attribute 26.Įnable the NAS to recognize and use both accounting and authentication VSA: radius-server vsa send authentication Attribute 26 allows a vendor to create an additional 255 attributes that is, a vendor can create an attribute that does not match the data of any IETF attribute and encapsulate it behind attribute 26.
Vendor-specific attributes ( VSAs) are derived from a vendor-specific IETF attribute (attribute 26). Radius-server attribute 31 send nas-port-detail mac-only Set the MAC address of the endpoint in IETF format in upper case and include information such as phone numbers, IP addresses, and MAC addresses: radius-server attribute 31 mac format ietf upper-case Include the class attribute in an access request for network access authorization: radius-server attribute 25 access-request include Send the IP address of an endpoint to the RADIUS server in the access request: radius-server attribute 8 include-in-access-req
Radius-server attribute 6 support-multiple Send the Service-Type attribute in the authentication packets, which is important for ISE to distinguish between the different authentication methods: radius-server attribute 6 on-for-login-auth
Below the attributes suggested for Cisco ISE. The IETF attributes are standard and the attribute data is predefined. Radius IETF attributes are the original set of 255 standard attributes that are used to communicate AAA information between a client and a server.
Cisco mac address command to block update#
AAA radius configurationĬonfigure authentication to use the radius method list (in this example, ISE-RADIUS-GROUP): aaa authentication dot1x default group ISE-RADIUS-GROUPĬonfigure authorization via ISE-RADIUS-GROUP group: aaa authorization network default group ISE-RADIUS-GROUPĬonfigure the switch to send accounting information to the radius servers at endpoint session start and end events: aaa accounting dot1x default start-stop group ISE-RADIUS-GROUPĬonfigure the switch to send periodic accounting updates for active sessions once every two days (this value is suggested by Cisco engineers): aaa accounting update newinfo periodic 2880 5. You can send reauthenticate or disconnect requests to a Network Access Device (NAD). Note: Cisco ISE provides a CoA feature for the Live Sessions that allows you to dynamically control active RADIUS sessions. When a policy changes for a user or user group in AAA, administrators can send the RADIUS CoA packets from the AAA server such as a Cisco ISE to reinitialize authentication and apply the new policy. The radius Change of Authorization ( CoA) feature provides a mechanism to change the attributes of an authentication, authorization, and accounting (AAA) session after it is authenticated. Define the radius Change of Authorization Note: My suggestion is to define the source interface to avoid the radius requests use a different interface.Įnables the least-outstanding load balancing for the global radius server group: radius-server load-balance method least-outstanding 3. Define the radius group aaa group server radius ISE-RADIUS-GROUP 'radius-server host 1.2.3.34 key ciscozine 'Ĭiscozine(config)# 2. Don’t use it because is deprecated as you see: Ciscozine(config)#radius-server host 1.2.3.34 key ciscozine-pwd Note: In the past the radius server was defined with the command “radius-server host …”). Remember: The dot1x plays a crucial role in the network if the radius server (for instance Cisco ISE server) has some trouble, noone will be authenticated! For that reason, my suggestion is to deploy at least a couple of radius servers as in the example.
Cisco mac address command to block how to#
In this post I explain how to configure dot1x in a switch (authenticator) with the best practice suggested by Cisco engineers.įor those who have not read the “ 802.1x: Introduction and general principles” article, I remember that the authenticator is a network access device ( NAD) which provides a data link between the client and the network and can allow or block network traffic between the two, such as an switch or access point.įirst of all you need to enable AAA service: aaa new-model 1. Just to remember that 802.1X authentication involves three parties: a supplicant, an authenticator, and an authentication server. In the previous article, I illustrated what are the dot1x and the benefits related to it.
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